Processed mineral additive for reducing concrete permeability and increasing strength

    公开(公告)号:US08821631B1

    公开(公告)日:2014-09-02

    申请号:US14120008

    申请日:2014-04-15

    IPC分类号: C04B14/18 C04B16/00

    摘要: A packaged concrete additive includes ground, expanded perlite with a volume weighted mean particle size of approximately 10-100 μm. The perlite optionally includes at least one additional component to improve workability and compensate for the natural tendency of expanded perlite to absorb water from the concrete mix. The additional component can include: water; a superplasticizer such as polycarboxylates, naphthalene sulfonate, and melamine sulfonate; or a hydrophobic compound, such as salts of fatty acids, fatty acids, silanes, and siloxanes. The additive is a flowable powder and for convenience of use it is packaged in a bag that can be directly added to the concrete batch and disappears on mixing. Concrete containing this additive displays superior properties to conventional concrete. Expanded perlite is a readily available raw material and the finished concrete is suitable where high strength structural concrete must withstand high temperatures.

    Processed mineral additive for reducing concrete permeability and increasing strength
    9.
    发明申请
    Processed mineral additive for reducing concrete permeability and increasing strength 有权
    加工的矿物添加剂,可减少混凝土的渗透性,增加强度

    公开(公告)号:US20140224153A1

    公开(公告)日:2014-08-14

    申请号:US14120008

    申请日:2014-04-15

    IPC分类号: C04B16/00 C04B14/18

    摘要: A packaged concrete additive includes ground, expanded perlite with a volume weighted mean particle size of approximately 10-100 μm. The perlite optionally includes at least one additional component to improve workability and compensate for the natural tendency of expanded perlite to absorb water from the concrete mix. The additional component can include: water; a superplasticizer such as polycarboxylates, naphthalene sulfonate, and melamine sulfonate; or a hydrophobic compound, such as salts of fatty acids, fatty acids, silanes, and siloxanes. The additive is a flowable powder and for convenience of use it is packaged in a bag that can be directly added to the concrete batch and disappears on mixing. Concrete containing this additive displays superior properties to conventional concrete. Expanded perlite is a readily available raw material and the finished concrete is suitable where high strength structural concrete must withstand high temperatures.

    摘要翻译: 包装的混凝土添加剂包括研磨,膨胀珍珠岩,体积加权平均粒度约为10-100μm。 珍珠岩任选地包括至少一种另外的组分以改善可加工性并补偿膨胀珍珠岩从混凝土混合物中吸收水的自然趋势。 附加组分可包括:水; 诸如聚羧酸盐,萘磺酸盐和三聚氰胺磺酸盐的超增塑剂; 或疏水性化合物,例如脂肪酸,脂肪酸,硅烷和硅氧烷的盐。 添加剂是可流动的粉末,为方便使用,它被包装在可以直接添加到混凝土批料中并在混合时消失的袋中。 含有这种添加剂的混凝土显示出比传统混凝土更好的性能。 膨胀珍珠岩是一种容易获得的原料,成品混凝土适用于高强度结构混凝土必须承受高温。